Solar PV Performance Thread - Post your monthly output

championc · 01-10-2022 12:48pm

September Stats

3.9kWp (S), 20kWh battery, 22 deg Slope

Generation – 241.73 kWh
Consumed   - 237.71 kWh
Import     – 65.32 kWh
Export     – 29.3 kWh
Eddi       - 1.7 kWh
Zappi      - 20.5 kWh

Meter Readings 05341 (01120 Day - up 5 / 04221 Night - up 54) - Gas 6293 (up 25)

Totals so far:

Month    |   2020 |   2021 |   2022 |
---------+--------+--------+--------+
January  |     75 |     56 |     81 |
February |    122 |    142 |    111 |
March    |    200 |    269 |    370 |
April    |    279 |    373 |    372 |
May      |    396 |    430 |    445 |
June     |    264 |    425 |    425 |
July     |    261 |    387 |    407 |
August   |    254 |    264 |    435 |
September|    268 |    248 |    242 |
October  |    151 |    185 |        |
November |     90 |     78 |        |
December |     56 |     52 |        |
---------+--------+--------+--------+
Total    |   2.41 |   2.90 |   2.88 |

rgfuller · 01-10-2022 1:28pm

11th Month

Dublin - Lucan - September 22 - 7.12kW total installed (S: 3.45kW, E: 2.41kW, W: 1.38kW). E&W Optimised. 5KWh Battery, (30 S & 22.5 E/W degree pitch).

Total Generation: 449kWh (146kWh consumed directly, 152kWh into battery, 151KWh to grid)

Best Day: September 4th - 32.0kWh

Worst Day: September 3rd - 3.0kWh

Total Consumption: 393kWh (77% Solar: 23% Grid Import (90kWh))

Milestones & Info:

43 kWh to Eddi

7th Month Generation Exceeds Consumption

2 Days no import :: 6th, 11th

Passed 5MWh generated this year.

Monthly Expected FIT €21.14 + Money Saved on Energy from PV :: €73.86 :: Total Savings €95.00 for Sept. (FIT @ 0.14c/KWh)

Expected FIT since Feb 15th €329.14 :: (24KWh Feb, 254 Mar, 272 Apr, 413 May, 382 Jun, 435 Jul, 440 Aug, 151KWh Sept : Total 2351KWh)

garbanzo · 01-10-2022 2:39pm

Hi fellow Solar folk.

Figures the month of September with a 4Kw system on an even East : West split based in South Dublin. No battery.

Total generated: 245kWh

Highest day: 4th September, 14.2 kWh

Lowest day: 3rd September 2.48 kWh

Had a visit from the SEAI guy earlier this week to check the works so expecting the grant to come through in the next 2-3 weeks.

g

paulbok · 01-10-2022 2:57pm

6.84kWp south facing, Roscommon. 4.8kw battery.

Sept 2022

593kWh generated (545 forecast) ,

(68.1kWh to Eddi )

(77.6% of total consumption, self produced)

Total consumption 640kWh. 204kWh discharged from battery. 143 kWh exported

134kWh imported (no day/night meter, but bulk imported during night, early morning & bad days)

32.8kWh generated best day (17th Sept)

5.0kWh generated worst day (27th Sept)

SD_DRACULA · 01-10-2022 3:04pm

West Dublin 7kwp S facing 20 kwh battery

Days without import - 21

ECO_Mental · 01-10-2022 9:07pm

6.1kWp South of Cork City,

597 kWh generated for September, Used 54% of it and the PV saved me about €100 on my Elec bill

More importantly I am now have been up an running for 12 months and I have generated 7,000 kWh or 7 Mega Watt Hours over the year (well 6965 kWh but who is going to argue about 35 kWh between friends...😉)

I was above my predicted generation for nearly every month and this August smashed it.

Here is my 7 day moving average over the past 11 months (as I don't have full daily data for last October logger was not set up yet) End of March and middle of August were big earners. July was a disappointment.

slave1 · 01-10-2022 9:46pm

If 322kW is saving you €100 then you should look to switch provider soon...

aleesi · 01-10-2022 10:14pm

PVGIS predicted 509KWh (for a 6KWp at -30° azimuth SSE with 5KWh batt for now) and I got 444KWh being the worse day 1.2KWh and best 32KWh

I've imported 29KWh and exported 135KWh.

While the system delivered 12-13% less than expected I'm overall happy, Eddi took care of the hot water and only had to turn the boiler on a couple of times. The system can handle the 5KWh batt pretty well and I think here is room for another 5KWh at the right price.

aleesi · 01-10-2022 10:20pm

https://www.boards.ie/discussion/comment/119690592#Comment_119690592

30cent/kWh (day rate) can't get much better these days.

septicsac · 02-10-2022 3:09am

7.8 KW system in Louth for Sept.

celtic_oz · 02-10-2022 8:43am

6.2Kwp up near the border

Gerry · 02-10-2022 8:51am

263kwh from 4kwh for sept. 60% exported. lot of the best days did not line up with our presence/usage. 220 of that is from 3kwp SW, 43 from 1kwp NE. was a very mixed month , I'm sure a proper September with an indian summer would be well over 300kwh

pms7 · 02-10-2022 8:30pm

Would anyone be able to post their daily production graphs please?

I want to see the production at the time of day, as I'm looking at solar for a dairy farm where peak demand is 8-10am and 5-7pm. Also orientation, size and if possible an average for a month or some daily ones. Is there any site where you can access this kind of information for a system. Have got approval for feed-in tariff but grant now an option after budget changes. Trying to decide if better to go for grant or feed-in tariff with no grant. Thanks

con747 · 02-10-2022 8:36pm

https://www.boards.ie/discussion/comment/119693617#Comment_119693617

Input the details in this website https://re.jrc.ec.europa.eu/pvg_tools/en/

John mac · 02-10-2022 10:28pm

September .. 7.4 east west split .. MAyo

Best day 08th .. 26.8

Worst day 20 th 5.8

total for month 474.40kWh

graememk · 03-10-2022 7:35am

https://www.boards.ie/discussion/comment/119693617#Comment_119693617

Not dairy, but sheep/cattle

Is your yard on a connection to the house or its own separate connection?

The production this time of year in them hours is practically nothing, high summer it's 2-3 kw on a clear day.

You could consider pre heating your hot water or batteries.

There is also a Seai grant now for businesses. If the house runs the yard the seai one covers that too (I went that route because it was much simpler) €2400 max grant

I have 8kwp on a NE/SW shed quite flat, walkable)

I know with tams your not meant to export but not sure how it's done, likely just an export limit on the inverter... Which could be just turned off when all is passed.

Pm me and I can get you a link to my monitoring you can look back through the last 2 yrs.

sligopaul · 03-10-2022 8:55am

September .. 6.6 south/ south east .. Sligo

Best day 10th .. 37.8

Worst day 20 th 4.3

total for month 521kWh

yankinlk · 08-10-2022 8:37pm

I just realised that today marks the first full year of my solar install journey. I got installed on the 7th last year - but i guess it was only a half day so today marks a complete years worth of usage. Am i happy? - over the damn moon.

I run a Day/Night meter and I load shift as much as possible. Based on my stats with EI since March, the units I am importing are 60% at Night time rate. My 5Kw battery helps here.

My best month for efficency was actually June. I generated more in August but imported 2 more Kw that month - so June wins. July I was on holidays so i wont count that month - i only imported 26 units. May was pretty much that start of the GREAT production for me but even in March I started seeing a HUGE reduction in energy imprted from the grid.

My worst month was December - so I added that here for a little taste of reality! :)

I still have a few trees around the property that are probably limiting my morning production - I think i could easily pass 5mWh in a year but Ill probably leave it for now.

Would I change anything? 2 actually.

I could have added 5 more panels on install day - and I may just do that one day. I added an Eddi this year - and I do love it - but if it was a choice between those 5 panels versus an eddi id go with the panels everytime.

The battery I got was a 5Kw and based on prices today and the "promise" of FIT - i would not bother getting one. However I am happy with the one I got and i couldnt imagine not having one for no other reason than covering the gaps of sunshine from clouds.

Big thanks to all that helped me get here on this forum!

I dont have a Graph for the Eddi - but I installed it at the end of April 2022. I have used 455Kw in total since then. I dont have a breakdown between boosts versus free sunshine. If anyone knows how that display works that would be great. That works out at about 3Kw per day. I boost in the mornings instead of using oil from May thru October. Im only starting to swap to oil now that its getting colder. Oil burner was not turned on to heat DHW since I got the eddi installed.

digiman · 09-10-2022 8:48am

Produced 386kWh in Sept on a 5.6kW system.

is it possible with Solis to split out the energy you use at night rate and at day rate?

paulbok · 09-10-2022 11:27am

https://www.boards.ie/discussion/comment/119720119#Comment_119720119

Don't think so. It would be great if they could do hourly bar charts per day, like what they do for the daily/monthly usage.

DC999 · 09-10-2022 11:37am

https://www.boards.ie/discussion/comment/119718874#Comment_119718874

Happy birthday :)

Class. I am only live since late July and very much learning still. Info like this helps me.

MAULBROOK · 12-10-2022 7:28pm

https://www.boards.ie/discussion/comment/119718874#Comment_119718874

Happy pv birthday. Its nice to see that the novelty has not warn off. Next year you can get it 5 extra panels for its second birthday.

Curiousness99 · 12-10-2022 7:49pm

https://www.boards.ie/discussion/comment/119720119#Comment_119720119

I’m getting envious, I got only 376kWh from a 8.1 kWp system, trees and some hills limiting my morning production

silver_sky · 31-10-2022 7:42pm

4.46kWp SW facing system in North Co. Dublin with 5kWh battery, Eddi, and Zappi car charger.

October 2022 generation was 273kWh with 67% self-consumption. Worst day was 19th at 0kWh (yes, you read that right) and best was 17th at 18kWh. Self-consumption should be higher but had issues with the Eddi losing signal. I've added an extension aerial a few days ago which seems to be working well so far.

garo · 31-10-2022 11:38pm

https://www.boards.ie/discussion/comment/119687526#Comment_119687526

4.8kW EW Dublin. 10kWh DIY battery

October 2022 (kWh):

Production: 225.2 (200 predicted, 221 last year)

Consumption: 715

Import: 511 (64d, 447n)

Export: 21.1

Best day: 1st: 13.3

Worst day: 19th: 0.7

Ubbquittious · 31-10-2022 11:52pm

Only 96. Bit of a sickner, only another couple hours of sun needed to break the 100

curioustony · 01-11-2022 8:35am

Roscommon, 4550Wp, Azimuth: 136° (SE), Slope: 24°

Worst day is due to a scheduled 8hr power outage (which triggered the fireman switch) -- probably would have been best day. Real worst day should be the 31st @ 1.4 kWh

Maybe I should stop looking until March!

Generation down on last year by ~20%

paulbok · 01-11-2022 8:35am

6.84kWp south facing, Roscommon. 4.8kw battery.

October 2022

385kWh generated (392 forecast) ,

(42.2kWh to Eddi )

(63% of total consumption, self produced)

Total consumption 610kWh. 173kWh discharged from battery.

59kWh exported

236kWh imported (24hr meter)

27.0kWh generated best day (14th Oct)

2.0kWh generated worst day (31th Oct) second worst ever day since install in early Jan.

THE ALM · 01-11-2022 10:33am

South Roscommon, 8.16Kwp, facing 210° at 35°, 9.6kWh battery

Total generation 486.50kWh (up on prediction at 446kWh)

Consumed 531.2kWh

Energy from Grid 125kWh (increasing as more charge for the EV needed going into the darker months as can be seen in the spikes for consumption)

Energy to Grid 61kWh

To the Eddi 75.1kWh

To the Zappi 104.20kWh

To the Battery 236.20kWh

From the Battery 208.20kWh

Best day 1st with 33.4kWh

Worst day 31st with 1.9kWh

Running about 87% self use.

Energy exported would have generated €10.98 at Energia FIT rate if on a smart meter, we are D/N.

DrPhilG · 01-11-2022 12:45pm

October Stats

7.44kWp (4.03 south/3.41 west), 20kWh battery, Zappi & Eddi – Donegal

Generation – 254.5kWh

Export – 11.1kWh

Import – 527.8kWh

Best day – 18th, 20.6kWh

Worst day - 29th, 1.4kWh

Days with less than 1kWh purchased - Lol, I'll remove this stat til March...

DrPhilG · 01-11-2022 12:47pm

Funnily enough my generation in October 2021 was only 0.2kWh different. But given that I've gone from 6.2kWp to 7.44kWp, October has been a turd.

Fell 47.5kWh short of prediction, so only 84% of what I had hoped. August hit 115% and September 114% though so it's all good.

Estimate for November is 130kWh.

championc · 01-11-2022 1:47pm

ctober Stats

3.9kWp (S), 20kWh battery, 22 deg Slope, Sth Dublin

Generation – 221.17 kWh
Consumed  - 217.67 kWh
Import   – 59.37 kWh
Export   – 17.21 kWh
Eddi    - 3.1 kWh
Zappi   - 13.7 kWh

Meter Readings 05406 (01128 Day - up 8 / 04278 Night - up 57) - Gas 6332 (up 39)

Totals so far:

Month    |   2020 |   2021 |   2022 |
---------+--------+--------+--------+
January  |     75 |     56 |     81 |
February |    122 |    142 |    111 |
March    |    200 |    269 |    370 |
April    |    279 |    373 |    372 |
May      |    396 |    430 |    445 |
June     |    264 |    425 |    425 |
July     |    261 |    387 |    407 |
August   |    254 |    264 |    435 |
September|    268 |    248 |    242 |
October  |    151 |    185 |    221 |
November |     90 |     78 |        |
December |     56 |     52 |        |
---------+--------+--------+--------+
Total    |   2.41 |   2.90 |   3.10 |

Boards.ie - Solar Capacity and production analysis

https://www.pvstats.eu/home.pl

DC999 · 01-11-2022 1:51pm

October 2022

4.9kW Dublin 12. Split is: E 55%, S 25%, NW 20%

Production: 240 kWh

Best day: 14 kWh (had a few of those)

Worst day: 0.3 kWh

Consumption: 465 kWh (including EV + heating for now while boiler is off)

Self-use (no battery so always a challenge): 47%. Trying to run some low-watt electric heaters to keep boiler off

rgfuller · 01-11-2022 7:06pm

12th Month

Dublin - Lucan - October 22 - 7.12kW total installed (S: 3.45kW, E: 2.41kW, W: 1.38kW). E&W Optimised. 5KWh Battery, (30 S & 22.5 E/W degree pitch).

Total Generation: 355kWh (117kWh consumed directly, 141kWh into battery, 97KWh to grid)

Best Day: October 1st - 20.3kWh

Worst Day: October 19th - 0.6kWh

Total Consumption: 407kWh (67% Solar: 33% Grid Import (135kWh))

Milestones & Info:

50kWh to Eddi

1 Full Year of install/production - See the yearly performance thread

Monthly Expected FIT €11.64 + Money Saved on Energy from PV :: €73.44 :: Total Savings €85.08 for Oct. (FIT @ 0.14c/KWh)

Expected FIT since Feb 15th €340.78 :: (24 Feb, 254 Mar, 272 Apr, 413 May, 382 Jun, 435 Jul, 440 Aug, 151 Sept, 97KWh Oct : Total 2448KWh)

Ha Long Bay · 01-11-2022 7:08pm

309kWh generated for October with 22.8KW to the Eddi. 7.2KW South facing in Dublin. Best days were the 1st and the 10th generated 17KW on both days.

SD_DRACULA · 01-11-2022 7:45pm

West Dublin 7kwp S facing 20kwh battery

Best day - 1st with 25kwh

Worst day - 19th with 4kwh

Days without import - 10

Marginally better than last year's

@Ha Long Bay your values seem a bit low and we seem to have similar system, you got any major shading?

Ha Long Bay · 01-11-2022 7:57pm

https://www.boards.ie/discussion/comment/119820728#Comment_119820728

No shading at all when I check back both strings are performing at a similar level. I am the other side of the city. Looking back that day on the 19th I generated 1kwh where you produced 4kwh.

21 panels so there will always be a slight deviation between strings.

garbanzo · 01-11-2022 8:08pm

Hi fellow Solar folk.

Figures for the month of October with a 4Kw system on an even East:West split based in South Dublin. No battery:

Total generated: 190.05 kWh

Highest day: 1st October, 10.56kWh

Lowest day: 19th October 0.47 kWh (note: that was the day it absolutely lashed all day and we’d thunder and lightning, though I consoled myself that the panels got a good wash 😀)

Pleased to report we received the full SEAI grant last month of €2,400 too.

g

bullit_dodger · 01-11-2022 8:11pm

Myself and Jonathan have similar systems, both in Dublin about 10-15 miles apart......but on dark grey days he'd always struggle to match my output (sub 1-2Kwhr), but on sunny days in winter, his south facing as opposed to my E/W would demolish my output.

I don't think we ever definitively sorted it out the reason (which galls me), but the best theory was that some panels are simply better at converting ambient light into power and/or my inverter was better at dealing with dealing with ambient light than his.

It was consistent too - but more of a point of interest rather than either of us having a "fault" as such.

Ha Long Bay · 01-11-2022 8:18pm

Just curious now @SD_DRACULA my best month was May. How do your figures compare.

JA panels and 6K Solis inverter here.

SD_DRACULA · 01-11-2022 9:04pm

For me the top was August with 908kwh

About the same in May it seems:

Probably just random clouds

It's all down-hill from here 12 panels shaded until mid-Feb 😭

ECO_Mental · 02-11-2022 10:10am

Generated 413 kWh for October for my 6.1 kWh system. Cork, South Facing.

Only used 44% of it and put that down to working in the office for all of the month until I get my working from home sorted. As a result I was not able to charge the EV on the few good days we had. Last October I generated 435 kWh so not that far off

I must chase up those Feckers in ESBN to get my Smart meter installed so I can get the full benefit for the Feed in Tarriff and use the extra low nigh rate

slave1 · 02-11-2022 12:23pm

Midlands

Array 1: 4.1kWp SSW with Winter Shading, 3.3kWp NNE

Array 2: 2.73kWp SE, 0.91kWp S, 3.64kWp SW (all neighbourhood shading/optimised)

522kW imported

480kWh Generated

410.2kWh consumed

214kWh diverted to Eddi

125.9kWh diverted to Zappi

Approx 810.8kms of range into the EVs

Highest was 37.8kWh

Lowest was 3.3kWh

74% self sufficient (excluding EVs)

44% self sufficient (including EVs)

Monthly cash saving based on average daily load and all non-load items like dishwasher/washing machine/immersion at night rate, €56.45

DownByTheGarden · 02-11-2022 12:46pm

https://www.boards.ie/discussion/comment/119820860#Comment_119820860

Are either of you charging your battery from the grid at night. Because the generation is way over estimated for the following day unless the solar generation exceeds what you charged the battery by. For example if you charged the battery last night look at your generation today in the solis app and see if it checks out.

championc · 02-11-2022 2:57pm

https://www.boards.ie/discussion/comment/119823251#Comment_119823251

I have my system on Standby from 23:00 - 23:59 and then charge my batteries from 00:00 - 07:59.

It makes the figures cleaner and easier to see when all charging and discharging in the same 24hr cycle

bullit_dodger · 02-11-2022 3:06pm

https://www.boards.ie/discussion/comment/119823251#Comment_119823251

I've a Givenergy system and Jonathan a Solis one as I recall - and that was a part of the logic I mentioned previously. One inverter may have different algorithm to squeeze out a few extra watts out the panels over another. The other thing is that some panels just are better at diffuse light than others.

No, this wasn't a reporting thing I think - but I do raise it to keep in mind when comparing similar system. You can't just look at the dark days and if you have a difference, you have a problem. You should also look at the bright clear days in the same month and compare those. If you have a difference there also and you have the same aspect/orientation, then you could have a problem alright.

DownByTheGarden · 02-11-2022 3:38pm

https://www.boards.ie/discussion/comment/119823977#Comment_119823977

The reason i mentioned it was that solis reports the battery charge as generation, when its not really generation

septicsac · 02-11-2022 5:47pm

Oct on 7.8KW in louth generated 479kwh, no stats etc as without datalogger until new one comes into stock.

yankinlk · 03-11-2022 8:58am

https://www.boards.ie/discussion/comment/119824374#Comment_119824374

Solis cloud app is wrong but you can use the Solis Home app and get the correct numbers.

..... tldr

Actually they are both correct... the issue is the daily reporting for gen includes import at night rate as day gen. But the monthly number only includes sunshine captured. I just checked October, and they both match.

irishchris · 03-11-2022 10:51am

October 22

543 kWh generated

From November on can see me charging battery 50-80% on night rate as month progresses but was surprised at October results as expected to be importing more on night rate that month but managed to get through without having to charge battery. Shame with balancing still pull handful of units as pinergy day rate is ridiculously high.

124kw exported @ 21c (€26.04)

10kw imported @ 43c (€4.30)

2kw imported @ 6c (12c)

Profit on units €21

Solar PV Performance Thread - Post your monthly output

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